The Bolt,machine, cataloged under National Stock Number 5306-01-359-4393, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Nylok Llc. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-359-4393 |
| Primary Part Number | NP140ML524N12P |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Nylok Llc |
| Status | ACTIVE |
| Head Height | 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN |
| Fastener Length | 0.688 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Thread Length | 0.667 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Locking Feature | PATCH THREADS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | PLASTIC POLYAMIDE NYLON LOCKING FEATURE |
| Material | NICKEL ALLOY K-500 OR NICKEL ALLOY R-405 OR NICKEL ALLOY 400 OR NICKEL ALLOY 502 FASTENER |
| Thread Series Designator | UNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| NP140ML524N12P PRIMARY | Nylok Llc (USA) |
| 0441B0133-18 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| P4ML524-12P | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 0441B0133-18 | 5/9 Secondary reference Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems |
| P4ML524-12P | 5/9 Secondary reference Nylok Llc |
NSN 5306-01-359-4393 is a Bolt,machine, manufactured by Nylok Llc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-359-4393 has 2 manufacturer part numbers on file: NP140ML524N12P (Nylok Llc), 0441B0133-18 (Lockheed Martin Corporation Div Rms).
Key specifications for NP140ML524N12P: Head Height: 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN; Fastener Length: 0.688 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN; Thread Length: 0.667 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.312 INCHES IN. 13 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.